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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: SimpleProperty.html 689 2013-06-28 19:22:16Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.vaadin;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.vaadin.data.Property;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import com.vaadin.data.util.AbstractProperty;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>/**<a name="line.13"></a>
<span class="sourceLineNo">014</span> * Simple read-only {@link Property} implementation backed by a Java object.<a name="line.14"></a>
<span class="sourceLineNo">015</span> *<a name="line.15"></a>
<span class="sourceLineNo">016</span> * &lt;p&gt;<a name="line.16"></a>
<span class="sourceLineNo">017</span> * The {@link Property}s is defined using a {@link PropertyDef} along with a {@link PropertyExtractor}<a name="line.17"></a>
<span class="sourceLineNo">018</span> * that is capable of reading the property's value from the underlying Java object.<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> * @param &lt;T&gt; the type of the underlying Java object<a name="line.20"></a>
<span class="sourceLineNo">021</span> * @param &lt;V&gt; the type of the property<a name="line.21"></a>
<span class="sourceLineNo">022</span> * @see SimpleContainer<a name="line.22"></a>
<span class="sourceLineNo">023</span> * @see SimpleItem<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span>@SuppressWarnings("serial")<a name="line.25"></a>
<span class="sourceLineNo">026</span>public class SimpleProperty&lt;T, V&gt; extends AbstractProperty {                // TODO: VAADIN7<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>    private final T object;<a name="line.28"></a>
<span class="sourceLineNo">029</span>    private final PropertyDef&lt;V&gt; propertyDef;<a name="line.29"></a>
<span class="sourceLineNo">030</span>    private final PropertyExtractor&lt;? super T&gt; propertyExtractor;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>    /**<a name="line.32"></a>
<span class="sourceLineNo">033</span>     * Constructor.<a name="line.33"></a>
<span class="sourceLineNo">034</span>     *<a name="line.34"></a>
<span class="sourceLineNo">035</span>     * @param object underlying Java object<a name="line.35"></a>
<span class="sourceLineNo">036</span>     * @param propertyDef property definition<a name="line.36"></a>
<span class="sourceLineNo">037</span>     * @param propertyExtractor extracts the property value from {@code object}<a name="line.37"></a>
<span class="sourceLineNo">038</span>     * @throws IllegalArgumentException if any parameter is null<a name="line.38"></a>
<span class="sourceLineNo">039</span>     */<a name="line.39"></a>
<span class="sourceLineNo">040</span>    public SimpleProperty(T object, PropertyDef&lt;V&gt; propertyDef, PropertyExtractor&lt;? super T&gt; propertyExtractor) {<a name="line.40"></a>
<span class="sourceLineNo">041</span>        if (object == null)<a name="line.41"></a>
<span class="sourceLineNo">042</span>            throw new IllegalArgumentException("null object");<a name="line.42"></a>
<span class="sourceLineNo">043</span>        if (propertyDef == null)<a name="line.43"></a>
<span class="sourceLineNo">044</span>            throw new IllegalArgumentException("null propertyDef");<a name="line.44"></a>
<span class="sourceLineNo">045</span>        if (propertyExtractor == null)<a name="line.45"></a>
<span class="sourceLineNo">046</span>            throw new IllegalArgumentException("null propertyExtractor");<a name="line.46"></a>
<span class="sourceLineNo">047</span>        this.object = object;<a name="line.47"></a>
<span class="sourceLineNo">048</span>        this.propertyDef = propertyDef;<a name="line.48"></a>
<span class="sourceLineNo">049</span>        this.propertyExtractor = propertyExtractor;<a name="line.49"></a>
<span class="sourceLineNo">050</span>        this.setReadOnly(true);<a name="line.50"></a>
<span class="sourceLineNo">051</span>    }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>    /**<a name="line.53"></a>
<span class="sourceLineNo">054</span>     * Retrieve the underlying Java object.<a name="line.54"></a>
<span class="sourceLineNo">055</span>     *<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * @return underlying Java object, never null<a name="line.56"></a>
<span class="sourceLineNo">057</span>     */<a name="line.57"></a>
<span class="sourceLineNo">058</span>    public T getObject() {<a name="line.58"></a>
<span class="sourceLineNo">059</span>        return this.object;<a name="line.59"></a>
<span class="sourceLineNo">060</span>    }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    @Override<a name="line.62"></a>
<span class="sourceLineNo">063</span>    public Class&lt;V&gt; getType() {<a name="line.63"></a>
<span class="sourceLineNo">064</span>        return this.propertyDef.getType();<a name="line.64"></a>
<span class="sourceLineNo">065</span>    }<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>    @Override<a name="line.67"></a>
<span class="sourceLineNo">068</span>    public V getValue() {<a name="line.68"></a>
<span class="sourceLineNo">069</span>        return this.propertyExtractor.getPropertyValue(this.object, this.propertyDef);<a name="line.69"></a>
<span class="sourceLineNo">070</span>    }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span>    /**<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * @throws Property.ReadOnlyException always<a name="line.73"></a>
<span class="sourceLineNo">074</span>     */<a name="line.74"></a>
<span class="sourceLineNo">075</span>    @Override<a name="line.75"></a>
<span class="sourceLineNo">076</span>    public void setValue(Object value) {<a name="line.76"></a>
<span class="sourceLineNo">077</span>        throw new Property.ReadOnlyException();<a name="line.77"></a>
<span class="sourceLineNo">078</span>    }<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span>    /**<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * @throws UnsupportedOperationException if {@code readOnly} is true<a name="line.81"></a>
<span class="sourceLineNo">082</span>     */<a name="line.82"></a>
<span class="sourceLineNo">083</span>    @Override<a name="line.83"></a>
<span class="sourceLineNo">084</span>    public void setReadOnly(boolean readOnly) {<a name="line.84"></a>
<span class="sourceLineNo">085</span>        if (!readOnly)<a name="line.85"></a>
<span class="sourceLineNo">086</span>            throw new UnsupportedOperationException();<a name="line.86"></a>
<span class="sourceLineNo">087</span>        super.setReadOnly(readOnly);<a name="line.87"></a>
<span class="sourceLineNo">088</span>    }<a name="line.88"></a>
<span class="sourceLineNo">089</span>}<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>




























































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